Pith Number

pith:ED3HFU6A

pith:2019:ED3HFU6A65BV5WLOTBTM5QUQEC

not attested not anchored not stored refs pending

A Scrapbook of Inadmissible Line Complexes For the X-ray Transform

Eric L. Grinberg, Mehmet Orhon

arxiv:1907.00280 v1 · 2019-06-29 · math.CO

Open paper page JSON Open Graph Bundle Merged state Verified badge What is a Pith Number?

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{ED3HFU6A65BV5WLOTBTM5QUQEC}

Prints a linked badge after your title and injects PDF metadata. Compiles on arXiv. Learn more · Embed verified badge

Record completeness

1 Bitcoin timestamp

2 Internet Archive

3 Author claim open · sign in to claim

4 Citations open

5 Replications open

✓ Portable graph bundle live · download bundle · merged state

The bundle contains the canonical record plus signed events. A mirror can host it anywhere and recompute the same current state with the deterministic merge algorithm.

Receipt and verification

First computed	2026-05-17T23:41:52.225044Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

20f672d3c0f7435ed96e9866cec290209e7546f4e96867ea6676703e2a0b2b56

Aliases

arxiv: 1907.00280 · arxiv_version: 1907.00280v1 · doi: 10.48550/arxiv.1907.00280 · pith_short_12: ED3HFU6A65BV · pith_short_16: ED3HFU6A65BV5WLO · pith_short_8: ED3HFU6A

Agent API

Resolver JSON Graph JSON Events JSON Schema Signing key

Verify this Pith Number yourself

curl -sH 'Accept: application/ld+json' https://pith.science/pith/ED3HFU6A65BV5WLOTBTM5QUQEC \
  | jq -c '.canonical_record' \
  | python3 -c "import sys,json,hashlib; b=json.dumps(json.loads(sys.stdin.read()), sort_keys=True, separators=(',',':'), ensure_ascii=False).encode(); print(hashlib.sha256(b).hexdigest())"
# expect: 20f672d3c0f7435ed96e9866cec290209e7546f4e96867ea6676703e2a0b2b56

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "4e4b8157d974fe496e2e1685dece66e0e9d2b18b262251dc12971caeaac18709",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.CO",
    "submitted_at": "2019-06-29T21:19:40Z",
    "title_canon_sha256": "b2c16fe2c8d0eebd22b49e1e2d0a56079103fdfd22ef4538e5b7fb536ddb41f2"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1907.00280",
    "kind": "arxiv",
    "version": 1
  }
}